package edu.sctu.practice.class02.zhaozhongjun.assign3.a1.a2;

/**
 * Created by zhao on 2015/11/5.
 */
public class Circle {
    protected double radius;

    public Circle() {

        radius = 1.0;
    }

    public Circle(double r) {

        radius = r;
    }

    public double getRadius() {

        return radius;
    }

    public void setRadius(double radius) {

        this.radius = radius;
    }

    public double findArea() {

        return radius * radius * Math.PI;
    }

    public boolean equals(Circle circle) {

        return this.radius == circle.getRadius();
    }

    public String toString() {

        return "圆的半径 = " + radius;
    }

}


